Some decide target night should be rejected as unified (10)
I believe the answer is:
integrated
'unified' is the definition.
(similar in meaning)
'some decide target night should be rejected' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'should be rejected' shows that the letters should be reversed in order.
'detargetni' can be found hidden inside 'decide target night'.
'detargetni' written backwards gives 'INTEGRATED'.
'as' acts as a link.
(Other definitions for integrated that I've seen before include "Combined into a whole" , "working as a unit" , "Formed into a whole" , "Unified" .)